A system for photocatalytic conversion includes a flowline, in which a production flow travels in a flow direction; and a reactor module. The reactor module includes a waveguide; a photocatalyst coupled to the waveguide, configured to convert hydrogen sulfide in the production flow to hydrogen and sulfur; a heater configured to heat a bottom of the reactor module, such that the sulfur is in liquid phase; and a sulfur collector configured to collect the sulfur. A method for photocatalytic conversion includes introducing a production flow from a flowline to a reactor module, the production flow including hydrogen sulfide and traveling in a flow direction; directing a light from a light source to a photocatalyst through a waveguide; converting the hydrogen sulfide into hydrogen and sulfur using the photocatalyst; and heating a portion of the reactor module to an elevated temperature, the sulfur in a liquid phase under the elevated temperature.

The invention provides a reactor assembly (1) comprising a reactor (30), wherein the reactor (30) is configured for hosting a fluid (100) to be treated with light source radiation (11) selected from one or more of UV radiation, visible radiation, and IR radiation, wherein the reactor (30) comprises a reactor wall (35) which is transmissive for the light source radiation (11), wherein: the reactor (30) is a tubular reactor (130), and wherein the reactor wall (35) defines the tubular reactor (130); the tubular reactor (130) is configured in a tubular arrangement (1130); the reactor assembly (1) further comprises a reactor support element (40), wherein the reactor support element (40) comprises a track (42), wherein the track (42) partly encloses the tubular reactor (130), wherein the reactor support element (40) comprises a thermally conductive element (2), and wherein the tubular reactor (130) is configured in thermal contact with the thermally conductive element (2).

A method and system of generating ozone gas. The method comprises receiving a stream of ambient air that includes at least oxygen gas, generating ozone gas based upon applying ultraviolet (UV) irradiation provided in accordance with a wavelength of 185 nanometer (nm) to at least a portion of the oxygen gas, the UV irradiation provided via an optical lamp module powered by a direct current (DC) voltage battery source, producing a modified air stream in accordance with the generating, and exhausting the modified air stream, the modified air stream having a higher concentration of ozone gas as compared with a trace concentration of ozone gas that is constituted in the stream of ambient air.

The invention provides a photoreactor assembly (1000) comprising (i) a light source arrangement (700), (ii) a photochemical reactor (200), and (iii) an induction based electrical power system (800); wherein: the light source arrangement (700) comprises one or more light sources (10), wherein the one or more light sources (10) are configured to generate light source radiation (11) selected from one or more of UV radiation, visible radiation, and IR radiation; wherein the light sources (10) comprise solid state light sources; the photochemical reactor (200) comprises a reactor chamber (210) configured to host a first fluid (5) to be treated with C the light source radiation (11); wherein the reactor chamber (210) is configured in a light-receiving relationship with the one or more light sources (10); the photochemical reactor (200) comprises a spinning disk reactor (201), wherein the spinning disk reactor (201) comprises a disk (250) at least partly configured in the reaction chamber (210); the induction based electrical power system (800) comprises an electrical power transmitter-receptor pair (810), which comprises an electrical power transmitter (820) and an electrical power receptor (830), wherein the electrical power receptor (830) is functionally coupled to the light source arrangement (700).

A photo-catalyst (E.sub.P) is regarded as an alternate method to replace the plasma chemical process and as an additional catalytic processing scheme on top of a micro- or nano-structured catalyst (E.sub.C) and electro-catalyst (E.sub.V). The potential energy reduction that results from the effect of photo-enhanced electro-catalyst (PEEC) is significant.

A UV reactor comprises a main chamber extending in a generally longitudinal direction. The main chamber may comprise a UV-LED and a reflective wall located at opposing longitudinal ends of the main chamber. Fluid enters main chamber through a fluid inlet and exits main chamber through a fluid outlet. The fluid inlet may be located at the reflective wall end of the main chamber. The fluid outlet may be located at the UV-LED end of the main chamber.

A composite material includes pineapple peel carbon and oxygen-deficient black zinc oxide (b-ZnO.sub.vac) nanoparticles. The composite material includes 2 to 20 weight percent (wt. %) pineapple peel carbon based on a total weight of the composite material. The pineapple peel carbon and the oxygen-deficient black ZnO nanoparticles are bonded through carbon-zinc interfaces and carbon-oxygen-zinc interfaces. The pineapple peel carbon has a sheet morphology. The oxygen-deficient black zinc oxide nanoparticles are coated with the pineapple peel carbon. The composite material has an X-ray diffraction (XRD) peak at a 2 value of 36.27 to 36.34.

A method of forming three-dimensional shaped microparticles in a microfluidic device includes flowing a mixture of a monomer and photoinitiator in a microfluidic channel having a plurality of pillars disposed therein to define a flow stream having a pre-defined shape and temporarily stopping the same. One or more portions of the flow stream are polymerized by passing polymerizing light through one or more masks and onto the flow stream, the polymerization process forming a plurality of three-dimensional shaped microparticles. The three-dimensional shape of the microparticle may be geometrically complex by using non-rectangular 2D orthogonal shapes for the flow and/or masked light source. The microparticles may include protected regions on which cells can be adhered to and protected from shear forces. The flow stream is restarted to flush out the newly formed microparticles and prepare the device for the next cycle of particle formation.

The invention provides a photoreactor assembly (1000) comprising (i) a light source arrangement (700), (ii) a photochemical reactor (200), and (iii) a lightguide body arrangement (500); wherein: the light source arrangement (700) comprises one or more light sources (10); wherein the one or more light sources (10) are configured to generate light source radiation (11) selected from one or more of UV radiation, visible radiation, and IR radiation; the lightguide body arrangement (500) comprises a lightguide body (550) and a light escape face (571); wherein the lightguide body (550) comprises a first lightguide part (551) and a second lightguide part (552); wherein the lightguide body (550) and the light source arrangement (700) are configured such that at least part of the light source radiation (11) that enters the lightguide body (550) via the first lightguide part (551) escapes from the lightguide body (550) via the second lightguide part (552); wherein the light escape face (571) is (a) configured downstream of the second lightguide part (552) or (b) is comprised by the second lightguide part (552); the photochemical reactor (200) comprises a reactor chamber (210) configured to host a first fluid (5) to be treated with the light source radiation (11); wherein the photochemical reactor (200) comprises a reactor chamber wall (220) enclosing at least part of the reactor chamber (210); wherein the photochemical reactor (200) comprises a spinning disk reactor (201), wherein the spinning disk reactor (201) comprises a disk (250) at least partly configured in the reactor chamber (210); and the lightguide body arrangement (500) (a) penetrates the reactor chamber wall (220) at least partly into the reactor chamber (210) or (b) provides part of the reactor chamber wall (220).